David



(No Model.

D. APPLETGN.

APPARATUS FOR ELEGTROPLATING.

No. 313,569. Patented Mar. 1 0,' 1885.

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UNITED STATES PATENT OFFICE.

DAVID APPLETON, OEMANGHESTER, ENGLAND.

'APPARATUS FOR E LECTROPLATING.

SPECIFICATION forming part of Letters Patent Il'o. 313,569, dated March10, 1885.

Application filed January 22, 1884. (No model.) Patented in EnglandJanuary 6, 1883, No. 88, and October 22, 1883, No. 5,011'; in FranceJanuary 30, 1883, No. 153,419; in Belgilun January 31, 1883, No. 60,314,and in Germany February 9, 1883, No. 24,599.

To all whom it may concern.-

Be it known that I, DAVID APPLETON, residing at Manchester, in theKingdom of England, have invented certain new and useful Improvements inApparatus for Electroplating, (for which Letters Patent have heretoforebeen granted to me by the government of Great Britain, No. 5,011, datedOctober 22, 1883,) of which the following is a specification.

My invention relates to a new apparatus for electroplating the surfaceof rollers used in printing and embossing of cotton and other wovenfabrics, and of paper and other materials.

It is well known that in electroplating, particularly when strongcurrents are used, bubbles of hydrogen gas will adhere to the surfacesto be plated, rendering the coating porous and defective. Forprinting-rollers such imperfect surfaces are entirely unsuitable.

The object of myinvention is to provide an apparatus for electroplatingprinting-rollers, by which a uniform layer of nickel is deposited on theprinting-roller; and the invention consists of the apparatus hereindescribed for plating said rollers.

In the accompanying drawings, Figure 1 represents a vertical transversesection, and Fig. 2 a vertical longitudinal section, of my improvedapparatus for electroplating printing-rollers.

Similar letters of reference indicate corresponding parts.

a is an engraved hollow copper roller,which is suspended in aplating-bath, b. The ends of the roller are closed by means of stoppersc c, which are mounted upon a shaft, (1, that is preferably made ofcopper. The stoppers c 0 may also be made of copper, or they may be madeof other material, so long as there is an electrical connection betweenthe roller and the shaft. The shaft d is suspended by means ofconductive links eefrom the cathodescribing witnesses.

bar f, which is in connection with a battery or with a dynamo-electricmachine. A shaft, 9, is mounted on bearings of standards attachedtotheplating-tank. Onthisshaftgismounted a pulley, h, which is connectedby means of a cord or chain or other driving medium with the stopper 0,which is formed to act as a pul v nected by supportingrods m toclamp-sockets m on the cathode-bar f. This brush bears against therevolving roller, removes any hydrogen-bubbles which may adhere to thesur-.

face of the roller, and causes a solid andhomogeneous deposition of themetal thereon. Theanodes 0 are suspended in the bath, one on each sideof the roller, and are connected with the proper pole of the battery ormachine.

In place of the brush, any other mechanical means may be used by whichthe accumulation of gas-bubbles on the surface of the deposit may beprevented.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of a plating-bath, means forsuspending the hollow printing-roller from the cathode-bar, means forimparting rotary motion to the roller, and a brush supported adjustablyon the cathode-bar and arranged in contact with the revolving roller,substantially' as specified.

In testimony whereof I have signed my name to this specification in thepresence of two sub- DAVID APPLETON.

Witnesses:

DAVID FULTON, ARTHUR LEDGER.

